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kyOne Valve for All Solutionsky Unique Mixproof Valve

Unique Mixproof Valve with ThinkTop®.

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ConceptThe exceptional concept of this mixproof valve is characterized byunmatched flexibility - yet still being very simple. The reliable modulardesign gives you the perfect valve for your exact needs in all mixproofoperations with two different products flowing through one valve.Unique fits your process!

The unique quality of this mixproof valve is the system of combiningspecific features and functions from a great variety of options offered.It is exceptional in the world of mixproof valves, yet requires minimalservice and maintenance.

Working PrincipleUnique is remote-controlled by means of compressed air. The valveis a normally closed (NC) valve.The valve has two independent plug seals, forming a leakage chamberbetween them under atmospheric pressure during every workingcondition. In case of rare accidental leaking of product, this will flowinto the leakage chamber and be discharged through the leakageoutlet. When the valve is open, the leakage chamber is closed. Theproduct can then flow from one line to the other.The valve can be cleaned and water hammer protected to any levelaccording to the needs in the specific process (see fig. 2). There isvirtually no spillage of product when operating the valve.

SpiralCleanThe Unique concept offers the Alfa Laval SpiralClean system to cleanthe upper and lower balanced plugs and leakage chamber, helping tomeet the high hygienic standards of the sanitary flow industry. Thesystem cleans more efficiently, uses less cleaning fluid by ensuring thata directional flow of CIP fluid reaches all the surfaces in much less timethan with conventional systems. All external CIP systems for Uniqueincludes the SpiralClean design as standard. Another benefit from theSpiralClean system is that it allows the Unique Mixproof valve to rununder aseptic-like conditions. If you apply steam to the CIP pipes, thiswill form a steam barrier to the atmosphere.

OptionsThe concept of Unique is centering round the customer’s needs andprovides modern tailor-made solutions which are secured for thefuture. The customer gets exactly what he needs and only that. OnlyAlfa Laval offers the possibility of not choosing unnecessary featuresand functions, thus avoiding problems caused by a non-adaptedproduct. The Unique Mixproof Valve is designed with user flexibilityin mind. The customer can choose additional options as requiredindividually; for example higher hygiene demands or higher resistanceagainst physically tough conditions. Please see fig. 2 next page for agraphic overview of the modularity of this Unique Mixproof Valve.

Fig. 6. Details of Unique Mixproof Valve

Dimensions (Inches)

Size OD OD OD OD ODISO 1½" 2" 2½" 3" 4"

*A Basic Clean 20.882 22.655 27.541 27.541 35.027*A Seat Clean 20.882 22.655 26.398 26.398 31.165

*A High Clean/UltraClean 24.073 25.846 29.944 29.944 36.327B 6.698 8.668 8.668 8.668 11.820

**C 2.396 2.908 3.400 3.897 4.870OD 1.497 2.009 2.502 2.998 4.003ID 1.371 1.883 2.376 2.872 3.845t 0.063 0.063 0.063 0.063 0.079

E Basic/Seat Clean 3.940 4.767 5.871 5.595 6.974E High Clean/Ultra Clean 5.674 6.501 7.880 7.604 9.771

F1 1.241 1.241 1.497 1.497 2.325F2 0.197 0.197 0.197 0.197 0.197

øD Basic 4.728 4.728 7.328 7.328 7.328øD Seat Clean,

High Clean and Ultra Clean 4.728 4.728 6.186 6.186 7.328L Basic 9.062 9.062 11.071 11.071 14.933

L Seat Clean,High Clean and Ultra Clean 9.062 9.062 9.929 9.929 11.071

M/Tri-clamp 0.827 0.827 0.827 0.827 0.827Weight (lb)

Basic 30 33 53 53 75Weight (lb)

SeatClean 30 33 53 53 75Weight (lb)

High-/UltraClean 32 35 59 59 84

Note!

* For the A-measure if different upper/lower body sizes, please refer to CAS configurator or contact Alfa Laval.

** The measure C can always be calculated by the formula C = ½IDupper + ½IDlower + 26 mm.

Selection guideTo assist you in the selection we have included some standardconfigurations:

- Unique Basic- Unique SeatClean- Unique HighClean- Unique UltraClean

You can either choose these directly or add additional featuresensuring that the valve suits your specific needs.

UniqueBasic has the basic components, providing significant safetyand leakage detection.

- Actuator without seatlift.- Unbalanced plugs.- No SpiralClean of leakage chamber or plugs.

Typical applications could be water inlet for water push of productor CIP supply and return lines. Not suitable in application with riskof pressure shocks or sticky products. Unique Basic Mixproof Valveis for low cost solutions.

Unique SeatClean meets the typical demands of a process valve inthe food and drink industry. It is also suitable for products with solids.Cleaning of the plugs and seats are performed by means of seatliftduring normal cleaning procedure. This valve also includes a balancedlower plug that eliminates the risk of mixing products by pressureshock or when the pressure in the pipe is high. Its features are:

- Actuator with seat lift integrated.- Balanced lower plug, Unbalanced upper plug.- No SpiralClean of leakage chamber or plugs.

Unique SeatClean is the choice for standard solutions.

1. Unique Basic2. Unique SeatClean3. Unique HighClean4. Unique UltraClean

Unique HighClean is sure to meet your processing needs whendealing with sticky products or if no recontamination can be acceptedat all, as the valve can be provided with SpiralClean both aroundspindles and in leakage chamber. The valve is characterized by:

- Actuator without seatlift integrated.- Balanced lower and upper plug.- SpiralClean of leakage chamber as well as of upper and lower plug.

With balanced plugs, the configuration of this valve protects againsthigh pressure and water hammer effect.

Unique UltraClean meets the highest demands for hygienicprocessing. It has:

- Actuator with seat lift integrated.- Balanced lower and upper plug.- SpiralClean of leakage chamber, upper and lower plug.

During the cleaning process, the plugs are lifted independently toensure cleaning of plugs and seats together with their correspondingpipe. At the same time or separately the leakage chamber andbalanced plugs are cleaned with our SpiralClean system. The UniqueUltraClean also protects against high pressure and water hammereffect. It has few product wetted seals and allows no product spillageduring operation. The Unique UltraClean mixproof valve is the choicefor solutions requiring the highest level of hygiene. The UltraCleanis suitable for applications with sticky products, products with highcontent of solids or applications where "close to aseptic conditions"is wanted.

Pressure drop/capacity diagrams

Fig. 3. Pressure drop/capacity diagram, upper body.

Full lines: Balanced upper plug.

Dotted lines: Unbalanced upper plug.

Fig. 5. Pressure drop/capacity diagram, between bodies.

Full lines: Balanced.Dotted lines: Unbalanced.

Example to determine pressure drop:Upper body size: 2". Balanced upper plug.

Capacity = 80 gpm.Lower body size: 3". Balanced lower plug.

Capacity = 80 gpm.Between bodies:. Capacity = 60 gpm.

Result:

From fig. 3, p = 0.9 psi through upper body.

From fig. 4, p = 0.25 psi through lower body.

From fig. 5, p = 1.7 psi seeing that:1. The smallest body determines the curve for p between bodies.2. Always choose the curve for balanced plugs if upper plug is

balanced. If only lower plug is balanced, always choose the curvefor unbalanced.

Fig. 4. Pressure drop/capacity diagram, lower body, balanced and

unbalanced lower plugs.

Note! For the diagrams the following applies:

Medium: Water (68°F).Measurement: In accordance with VDI 2173.

Valve body combinations

The drawing below gives an overview of all options when choosing the valve to fit your process, thus demonstrating the actual flexibility of the UniqueMixproof Valve. You can either choose these directly or add additional features ensuring that the valve suits your specific needs.

The Unique concept offers balanced and unbalanced plugs, seat lift, CIP for the plugs and leakage chambers and any combination in between.

Size flexibility

Balancing flexibility

Hygienic flexibility

Fig. 2. Maximum flexibility option sheet.

Flexible Design Features- Excellent flexibility - though simple.- Adaption to all working conditions by combining components.- Logically structured maintenance and valve assembly.- Adaption and/or up-/downgrading on site.

a. Easy troubleshooting.b. Secured for future changes in working conditions.

Technical DataMax. product pressure: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140 psi (for higher pressure, please ask Alfa Laval)Min. product pressure: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Full vacuum.Temperature range: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23°F to +257°F (Depending on seal material)

(For higher temperature, please ask Alfa Laval)Air pressure: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116 psi

MaterialsProduct wetted steel parts: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Acid-resistant steel AISI 316LOther steel parts: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Stainless steel AISI 304Product wetted parts: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .EPDM, HNBR, NBR or FPMOther seals: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .CIP seals: EPDM.

Actuator seals: NBR.Finish - choose from the following . . . . . . . . . . . . . . . . . . . . . . . . . . . Internal/external Matt (blasted) Ra<64µ"

Internal Bright (polished) Ra<32µ"Internal/external Bright (internal polished) Ra<32µ"Note! The Ra values are only for the internal surface.

Actuator

STD STD/STD*

Configura-

tor Code(Ordering

leaflet)2 3 4 5 6

Operating pressure for SeatClean,

High Clean and Ultra Clean at

6 bar air pressure

Operating pressure

for Basic at 6 bar air

pressure

Actuator

Type3 4BS1 4SS2 5BS 5SS

Actuator

dimensions4.72 x 6.18 x 7.32 x 7.32 x 7.32 x

øD x L 9.06 9.92 11.06 11.06 14.92Tube OD

1½" STD OP OP 140 872" STD OP OP 140 87

2½" OP STD STD* OP OP 140 873" OP STD STD* OP OP 140 874" OP OP STD STD* 116 87

STD: Normal size of actuatorSTD*: Normal size actuator if lower plug is UNBALANCEDOP: Alternative size of actuator (NB: For choice and performance of optional actuators please contact Alfa Laval or refer to the CAS Configurator).

1 BS = Basic spring2 SS = Strong spring

Recommended min. pressure for SpiralClean: 29psi.Formula to estimate CIP flow during seat lift:

(for liquids with comparable viscosity and density to water):

Q = Cv ·√ p

Q = CIP - flow (gpm)

Cv = value from the above table.

p =CIP pressure (psi)

Assumption: Density = 1

Size OD OD OD OD ODISO 1½" 2" 2½" 3" 4"

Cv-value Upper Seat-lift [gpm/psi] 2.9 2.9 4.3 4.3 5.3Cv-value Lower Seat-lift [gpm/psi] 2.2 2.2 3.6 3.6 4.9Air consumption Upper Seat-lift

* [cubic inches] 12 12 24 24 38Air consumption Lower Seat-lift

* [cubic inches] 6.7 6.7 8 8 13Air consumption Main Movement

* [cubic inches] 52 52 99 99 170Cv-value SpiralClean Spindle CIP

[gpm/psi] 0.14 0.14 0.14 0.14 0.14Cv-value SpiralClean

External CIP of leakage chamber

[gpm/psi] 0.29 0.29 0.34 0.34 0.34

OptionsThinkTop® control & Indication unit

OrderingFor ordering, refer to CAS configurator.

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ESE00279ENUS 0705 The information contained herein is correct at the time of issue,

but may be subject to change without prior notice.

How to contact Alfa LavalContact details for all countriesare continually updated on our website.Please visit www.alfalaval.com toaccess the information direct.